The animated serie Avatar is about the world's power that for long was divided over four nations: Earth, Fire, Water and Air. Eventually the world fell out of balance and there was only one Avatar who could save it: Aang.
The gang find Iroh with June's help. Iroh suggests that Zuko challenge Azula for the position of Fire Lord, with Katara to help. The others decide to intercept the airship fleet.
S3E319 23 min